12545622317 has 2 divisors, whose sum is σ = 12545622318. Its totient is φ = 12545622316.

The previous prime is 12545622289. The next prime is 12545622359. The reversal of 12545622317 is 71322654521.

12545622317 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7696728361 + 4848893956 = 87731^2 + 69634^2 .

It is a cyclic number.

It is not a de Polignac number, because 12545622317 - 2¹² = 12545618221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12545621317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6272811158 + 6272811159.

It is an arithmetic number, because the mean of its divisors is an integer number (6272811159).

Almost surely, 2^12545622317 is an apocalyptic number.

It is an amenable number.

12545622317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12545622317 is an equidigital number, since it uses as much as digits as its factorization.

12545622317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 38.

The spelling of 12545622317 in words is "twelve billion, five hundred forty-five million, six hundred twenty-two thousand, three hundred seventeen".